On 5/21/23 02:56, marcus.bow...@visible.eclipse.co.uk wrote:
On 2023-05-21 03:43, Chris Albertson wrote:
Even 3D-printed PLA plastic can be strong enough. I have a 3D-printed
CNC conversion of a harbor freight milling machine. Normally they use
metal parts for the motor mounts and such but PLA can be just as rigid
if you make the parts thicker.
Yes; I have printed parts for several small machines for manually
cutting tube, and I have printed and used some large fixtures which hold
parts for milling, all quite successful. The key lies in the design,
taking account of the properties of the printed material. So I guess its
the same with epoxy/fibre. I have used glassfibre and epoxy for repairs,
but hadn't thought to use it for structural purposes on a new part, so I
must try that. Thanks for the suggestion.
Marcus
I'm using PETG+CF for parts where it s/b more rigid. Not as strong as
pure petg, but much more rigid. Its abrasive though, so don't use for
rubbing parts, bolted seems ok. I have two motor mounts in plain petg,
seems to be rigid enough.
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